- 
  
  
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  echinoderms
 invertebrates
 earliest fish (abundant)
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  Earliest terrestrial plants and animals
- 
  
  armored fish extinct
 earliest amphibians and ammonites
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  abundant sharks and amphibians
 Large swamp lands
 coal-forming forests
 earliesgt reptiles
 scale trees & seed ferns
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  Volcanic eruptions ( 1st mass extinction )
 95% al species extinct ( including trilobites)
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  earliest dinosaurs
 abundant cycads and conifers
- 
  
  earliest birds & mammals
 abundant dinosaurs & ammonites
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  earliest flowering plants
 climax of dinosaurs
 decline o/ brachiopods
 abundance o/ bony fish
 meteor extinction (65%)
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  earliest placental mammals & large running
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  Large carnivores
 Neanderthals
 mastodons